Q. What is the primary factor that determines the acidity of a compound?
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A.
Electronegativity
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B.
Molecular weight
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C.
Atomic radius
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D.
Bond length
Solution
Electronegativity is the primary factor; higher electronegativity of the atom bonded to hydrogen increases acidity.
Correct Answer:
A
— Electronegativity
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Q. What is the primary factor that determines the acidity of a solution?
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A.
Concentration of hydroxide ions
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B.
Concentration of hydrogen ions
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C.
Temperature
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D.
Pressure
Solution
The acidity of a solution is primarily determined by the concentration of hydrogen ions (H+).
Correct Answer:
B
— Concentration of hydrogen ions
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Q. Which of the following bonds is the most polar?
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A.
C-H
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B.
O-H
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C.
N-H
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D.
S-H
Solution
The O-H bond is the most polar due to the high electronegativity difference between oxygen and hydrogen.
Correct Answer:
B
— O-H
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